LESSON 3.3 - 3.4

Question 1

The characteristics of precipitation that are important to hydrologic forecasting and water resource data are:

Answer 1

 Depth
 Duration
 Intensity
 Frequency

Question 2

is a crucial parameter in hydrology, as it helps us understand the amount of precipitation in a given
area over a specific period.

Answer 2

Depth of rainfall

Question 3

essential for various applications, including
flood forecasting, water resource management, and agricultural planning.

Answer 3

Depth of rainfall

Question 4

All form of precipitation is measured on the basis of the ___________of water that would accumulate on a level
surface if the precipitation remained where it fell.

Answer 4

vertical depth

Question 5

refers to the length of time rainfall occurs. Rainfall of longer duration can significantly affect
infiltration, runoff, and soil erosion processes.

Answer 5

Duration

Question 6

is defined as the time rate of rainfall depth and is commonly given in the units of millimeters per hour (or
inches per hour).

Answer 6

Intensity (rate of rainfall)

Question 7

_______and________duration can have a large influence on whether the rainfall infiltrates or becomes surface runoff.

Answer 7

Intensity and Duration

Question 8

the return period refers to how often rainfall occurs at a particular amount or
intensity and duration.

Answer 8

Frequency

Question 9

is a graphical
representation of the distribution
of rainfall intensity over time.

Answer 9

HYETOGRAPH

Question 10

is a bar diagram.

Answer 10

HYETOGRAPH

Question 11

This chart is very useful in
representing the characteristics
of storm, and is particularly
important in developing the
design a storm to predict extreme
floods.

Answer 11

HYETOGRAPH

Question 12

What are the 5 different Types of Rain Gauges?

Answer 12

1. Non-recording Rain Gauge
2. Recording Rain Gauge
   3.Automatic-radio-reporting Rain Gauge
3. Automatic Rain Gauge
4. RADAR (Radio Detection and Ranging)

Question 13

A non-recording rain gauge measured every 8:30 o’clock. During heavy rains, it must be measured 3 to 4 times. It gives total depth of rainfall for the precious 24 hours.

Answer 13

Symon’s Rain Gauge

Question 14

Also called self-recording, automatic, or integrating raim gauge

Answer 14

Recording Rain Gauge

Question 15

This consists of a cylindrical receiver 30 cm
diameter with a funnel inside

Answer 15

Tipping Bucket Rain Gauge

Question 16

In this type of rain-gauge, when a
certain weight of rainfallis collected in a tank, which rests on a
spring-lever balance, it makes a pen to move on a chart wrapped
round a clockdriven drum

Answer 16

Weighing type Rain Gauge

Question 17

In this type, as the rain is collected in
a float chamber, the float moves up which makes a pen to
move on a chart wrapped round a clock driven drum

Answer 17

Float-type Rain Gauge

Question 18

This type of raingauge is used in mountainous areas, which are not easily accessible to collect the rainfall data manually.

Answer 18

Automatic-radio-reporting rain-gauge

Question 19

Gauges observe rainfall amount every 10 minutes and
automatically send the data to a collection server.

Answer 19

Automatic Rain-gauge

Question 20

weather surveillance radar (WSR) is useful in locating precipitation and
estimate its intensity and determine the center of tropical cyclones

capable of
estimating radial velocity which can be used to determine the wind strength of
tropical cyclones as well as to analyse its structure.

Answer 20

RADAR (Radio Detection and Ranging)